ASTM A234zitsulo zokhazikikazopangira mapaipiakhala akugwiritsidwa ntchito kwambiri mu machitidwe a mapaipi, kuphatikizapo zitsulo za carbon ndi alloy zitsulo.

Kodi zitsulo zazitsulo zazitsulo ndi chiyani?
Kuyika kwa chitoliro chachitsulo kumapangidwa ndi chitoliro cha kaboni kapena aloyi chitsulo chitoliro, mbale, mbiri, ku mawonekedwe enaake omwe angapangitse ntchito (Sinthani momwe madzi amayendera kapena kuchuluka kwake) pamapaipi. Nthawi zambiri zopangira izi zimaphatikizapo chigongono chachitsulo (45 kapena 90 degree bend), tee, chochepetsera (concentric kapena eccentric reducer), mtanda, zipewa, nipple, flanges, gasket, studs ndi zina.

Zolinga zamakampani, m'mapaipi nthawi zambiri timafunikira kusintha njira yotumizira; Sinthani madzi (mafuta ndi gasi, madzi, slurry) kuchuluka kwa kutuluka; Tsegulani kapena kutseka mapaipi, ndi zina zotero. Kuti mutsirize ntchitozi, zitsulo zazitsulo zidzagwiritsidwa ntchito.

Kodi ASTM A234 WPB ndi chiyani?
ASTM A234 ndi Mafotokozedwe Okhazikika azitsulo zazitsulo zazitsulo zimaphatikizapo zitsulo za carbon ndi alloy zitsulo pa ntchito zolimbitsa thupi komanso kutentha kwambiri. Zimakwirira zitsulo zamitundu yopanda msoko komanso yowotcherera. Zopangira zachitsulo zachitsulo zimagwiritsidwa ntchito pamapaipi oponderezedwa komanso pamapaipi oponderezedwa. Zida zopangira izi zimakhala ndi zitsulo zophedwa, zopangira, mipiringidzo, mbale, zopanda msoko kapena HFW (fusion welded) zida zamapaipi, zowonjezeredwa zitsulo.

ASTM A234 imaphatikizapo zitsulo zopangira zitsulo za carbon ndi aloyi zomangira zopanda msoko ndi zowotcherera zomwe zimakutidwa ndi kukonzanso kwaposachedwa kwa ASTM B16.9, B16.11, MSS-SP-79, MSS-SP-83, MSS-SP-95, ndi MSS -SP-97. ndi zina.

Monga tikudziwira, zida zachitsulo za ASTM A234 zimagwiritsidwa ntchito popanga mapaipi oponderezedwa komanso popanga zotengera zokakamiza, pazithandizo zotentha kwambiri komanso zokwera. Zida zopangira mulingo uwu zimakhala ndi zitsulo zophedwa, zopangira, mipiringidzo, mbale, zopanda msoko kapena zophatikizika zokhala ndi zitsulo zowonjezeredwa.
Mulingo uwu umakhudzanso mawonekedwe a zigongono, ma tee, zochepetsera, zisoti ndi mtanda, nthawi zambiri amatengera nsonga zowotcherera.

Miyezo ya ASTM A234 zitsulo zopangira chitoliro
Miyezo: ANSI /ASME B16.9, B16.28, MSS-SP-43.
Kunja Diameter Range: 1/2 "mpaka 48"
Makulidwe osiyanasiyana: SCH 10, sch 20, SCH 40, SCH STD, SCH 80, SCH XS, SCH 160, SCH XXS etc.
Mitundu yopangira mapaipi achitsulo mu forged, threaded, butt weld, and seamless.

Maphunziro mu ASTM A234:

Mafotokozedwe a ASTM A234 ali ndi magiredi ambiri, monga WPB, WPC, WP5, WP9 WP11, WP12, WP22, WP91 ndi zina zotero.
M'magulu awa a WPB ndizomwe zimagwiritsidwa ntchito kwambiri pamapaipi apakati komanso kutentha kwambiri. W amatanthauza kuwotcherera, P amatanthauza kukakamiza, B ndi giredi b, kunena za mphamvu zokolola zochepa.
Gwero lazitsulo zazitsulo za ASTM A234 WPB zitsulo zopangira chitoliro zingakhale kuchokera ku chitoliro chachitsulo, monga ASTM A106 Gr.B ndi C. Komanso kuchokera ku mbale yachitsulo, monga ASTM A285 Gr.C, ASTM A516 Gr 70, ASTM A572 etc.

ASTM A234 WPB chitoliro chachitsulo choyenera mankhwala ndi makina:
1) Zopangira za WPB zamagulu opangidwa kuchokera ku mapaipi achitsulo kapena ma mbale C ndi 0.35%.
2) Zopangira zopangira Kaboni 0.35% pazipita ndi Silicon zili 0.35% pazipita, osachepera.
3) Pakuchepetsa kulikonse kwa 0.01 ya Carbon, kuchuluka kwa Manganese kumawonjezeka ndi 0.06%, mpaka 1.35% ya Mn.
4) Copper, Nickel, Niobium ndi Molybdenum ndalama zonse siziyenera kupitirira 1.00%.
5) Niobium + Molybdenum sichidzadutsa 0.32%.

Makina amakina a ASTM A234 WPB zolumikizira mapaipi:
Kuthamanga Kwambiri 60,000 pis 415 Mpa
Zokolola Mphamvu 35,000 psi 240 Mpa
Kupanikizika kwa Magawo: 150LBS, 300LBS, 600LBS, 900LBS, 1500LBS, 2000LBS, 3000LBS mpaka 9000LBS.

ASTM A234 imaphatikizapo zopangira zopanda msoko komanso zowotcherera:
Pakuti zitsulo zitsulo chitoliro zovekera amatanthauza zovekera yaiwisi ku mipope zitsulo zosasunthika ndi machubu;Motero welded zitsulo chitoliro zovekera chimakwirira zovekera zopangira ku mipope zitsulo welded.
Zadziwika kuti,
Mafotokozedwe a ASTM A234 samaphimba zowotcherera zotayira kapena zomangira zopangidwa ndi makina opangira.

Njira zopangira mapaipi achitsulo:
Njira zopangira zopangira zitoliro zimaphatikizapo ntchito zopangira ndi kupanga. Komanso kukanikiza, nyundo, kuboola, extruding, kukhumudwitsa, kugudubuza, kupinda, maphatikizidwe kuwotcherera ndi Machining. Kapena njira zophatikizira ziwiri kapena zingapo izi.

Pakupanga zitsulo zazitsulo zopangira zitoliro, zotsatirazi ziyenera kuzindikiridwa:
1) Zopanda ungwiro zovulaza, zolakwika zowotcherera sizidzapangidwa.
2) Pambuyo popanga kapena kupanga zopangira kutentha koyenera, zidzakhazikika m'malo oyenera kutentha komwe kuli pansi pazigawo zovuta kwambiri. Ndipo palibe cholakwika chilichonse pa nthawi yozizira. Kuzizira kofulumira sikuyenera kupitirira mumlengalenga.
3) Kuyang'anira koyenera kudzachitika pambuyo popanga. (Kuyesa kwa Hydrostatic, kuyesa kuuma, kuyesa kwamphamvu, etc.)

Aloyi zitsulo zoyikira chitoliro giredi mu ASTM A234

Kuyika kwa chitoliro chachitsulo cha alloy kumapangidwa ndi zinthu za alloy monga Chrome, Molybdenum, Nickel alloy, Hastelloy alloy, Monel, Inconel, ndi zina. Amagwiritsidwa ntchito kwambiri m'mapaipi amafuta ndi gasi, m'mafakitale amankhwala, malo opangira magetsi, malo amagetsi a nyukiliya, komanso pama seva.

Aloyi zitsulo chitoliro zovekera zikuphatikizapo zovekera buttweld, aloyi zitsulo utali wozungulira bend, aloyi zitsulo zopangira anapeka ndi zina zotero.
The aloyi zitsulo buttweld zovekera utenga ASTM A234 muyezo, ali WP1, WP5, WP11, WP12, WP22, WP23 ndi WP91 giredi. Mulingo wakalasi mu CL1, CL2, CL3.

ASTM A234 aloyi zitsulo chitoliro zovekera zikuphatikizapo aloyi zitsulo elbows mu utali wautali ndi lalifupi utali wozungulira, aloyi zitsulo eccentric & concentric reducer, aloyi zitsulo zisoti & mitanda, aloyi zitsulo couplings, aloyi zitsulo tees, aloyi zitsulo nsonga zamabele, aloyi zitsulo zisoti ndi zina mitundu. Ili ndi mitundu yopanda msoko, yowotcherera komanso yopangidwa.
Pazitsulo zopangira zitsulo za aloyi, zimatengera ASTM A182 muyezo umatanthawuza ma flanges achitsulo. Muyezo wazinthu mu ASTM A182 F1, F5, F9, F11 Kalasi 1, F12 Kalasi 1, F22 Kalasi 1 ETC.

Chemical Composition

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